Technology · OpenBSD
Openbsd vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 13 vulnerabilities in Openbsd: 0 in the last 7 days and 2 in the last 90 days, 2 of them critical and 1 exploited in the wild. The most recent, CVE-2026-103547, was published on 30 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 2
- Exploited in the wild
- 1
About Openbsd
OpenBSD is a free, open-source Unix-like operating system emphasizing security and code correctness.
Latest Openbsd vulnerabilities
- CVE-2026-103547: OpenBSD ldapd LDAP Bind authentication confusion attackinfo
- CVE-2026-56101: OpenBSD TKIP MIC-failure countermeasure inverted comparisonmediumCVSS 5.3EPSS 0.6%
- CVE-2026-57589: OpenBSD use-after-free in System V semaphore implementationhighCVSS 7.4
- CVE-2026-55706: OpenBSD auth bypass and heap over-read in sppp_pap_inputmediumCVSS 5.8EPSS 0.2%
- CVE-2026-41285: In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Neighbor…mediumCVSS 4.3EPSS 0.2%
- CVE-2020-7247: OpenSMTPD Remote Code Execution Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-1999-0323: FreeBSD and NetBSD file integrity bypass in mmap functioncriticalCVSS 10
- CVE-1999-0304: BSD mmap memory modification via kmem deviceshighCVSS 7.2
- CVE-1999-0305: BSD sysctl improper restriction of source routed packetsmediumCVSS 5
- CVE-1999-0061: BSD lpd remote command execution and file manipulationmediumCVSS 5.1
- CVE-1999-1214: BSD Kernel Improper Credential Validation in Asynchronous I/OlowCVSS 2.1
- CVE-1999-1225: Linux and Ultrix Information Disclosure in rpc.mountdmediumCVSS 5
- CVE-1999-1296: MIT Kerberos buffer overflow in Kerberos IV compatibility libraryhighCVSS 7.2
Most severe Openbsd vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2020-7247: OpenSMTPD Remote Code Execution Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-1999-0323: FreeBSD and NetBSD file integrity bypass in mmap functioncriticalCVSS 10
- CVE-2026-57589: OpenBSD use-after-free in System V semaphore implementationhighCVSS 7.4
- CVE-1999-0304: BSD mmap memory modification via kmem deviceshighCVSS 7.2
- CVE-1999-1296: MIT Kerberos buffer overflow in Kerberos IV compatibility libraryhighCVSS 7.2
- CVE-2026-55706: OpenBSD auth bypass and heap over-read in sppp_pap_inputmediumCVSS 5.8EPSS 0.2%
- CVE-2026-56101: OpenBSD TKIP MIC-failure countermeasure inverted comparisonmediumCVSS 5.3EPSS 0.6%
- CVE-1999-0061: BSD lpd remote command execution and file manipulationmediumCVSS 5.1
- CVE-1999-0305: BSD sysctl improper restriction of source routed packetsmediumCVSS 5
- CVE-1999-1225: Linux and Ultrix Information Disclosure in rpc.mountdmediumCVSS 5
Vulnerabilities per week
Nothing in the last four weeks, down from 1 vulnerability in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 1 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 1 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Openbsd vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/openbsd)<a href="https://junglewise.ai/threats/technologies/openbsd"><img src="https://junglewise.ai/threats/technologies/openbsd/badge.svg" alt="Openbsd vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/openbsd.json, and this page as text at https://junglewise.ai/threats/technologies/openbsd.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Openbsd vulnerabilities", https://junglewise.ai/threats/technologies/openbsd, 12 November 2026.